Patent US3907772A successfully refreshed from Google Patents.
US3907772A
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Process for preparing loganin and analogs thereof
Assignee: F Hoffmann La Roche AG
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Filing: 1973-06-01
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Granted: 1975-09-23
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Expires: 1993-06-01
Abstract
Abstract The present invention relates to a process for the preparation of loganin and analogs thereof. Loganin and analogs thereof are useful in the preparation of alkaloids.
Inventors
- 👤 Jr John Joseph Partridge
- 👤 Milan Radoje Uskokovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:51
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/94
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
19 words
A compound as in claim 1 wherein R3 is selected from the group consisting of lower alkyl and glucopyranosyl.
Claim 4
Dependent Claim
10 words
A compound as in claim 2 wherein R3 is glucopyranosyl.
Claim 5
Dependent Claim
10 words
A compound as in claim 2 wherein R3 is methyl.
References Cited (Backward Citations)
US3585215A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-22 | 1979-03-24 | 1979-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-22 | 1983-03-24 | 1983-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-22 | 1987-03-24 | 1987-09-23 | $7700.00 | Window Closed / Lapsed |